Japanese astronomers have proposed that an "Earth-like" planet exists much closer to home than the infamous Planet Nine
Earth-like' Planet Nine could be hiding in our solar system
Discovery Alert: The Planet that Shouldn't Be There – Exoplanet Exploration: Planets Beyond our Solar System
Wildfires amplify risks for socially vulnerable populations in Western states •
Scientists believe an Earth-sized planet could be hiding in our own Solar System
Earth-sized planet could be lurking at the edge of the solar system, simulations suggest – Physics World
Earth-like planet is hiding in our own solar system •
Forget Planet Nine! Scientists say an Earth-like world could be hiding within our Solar System
Could an 'Earth-like' planet be hiding in our outer solar system?
Earth-like' planet could be hiding in our solar system: new research - The Mirror US